package tools;

import java.util.Stack;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

/**
 * @author ���� ����԰
 * @date ����ʱ�䣺2015-7-17 ����11:21:10
 * @version 1.0
 * @parameter
 * @since
 * @return
 */
public class AppManager {

	// Activityջ
	private static Stack<Activity> activityStack;
	// ����ģʽ
	private static AppManager instance;



	/**
	 * ��һʵ��
	 */
	public static AppManager getAppManager() {
		if (instance == null) {
			instance = new AppManager();
		}
		return instance;
	}

	/**
	 * ���Activity����ջ
	 */
	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	/**
	 * ��ȡ��ǰActivity����ջ�����һ��ѹ��ģ�
	 */
	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}

	/**
	 * 
	 */
	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	/**
	 * 结束Activity
	 */
	public void finishActivity(Activity activity) {
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 关闭Activity
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	/**
	 * 关闭全部Activity
	 */
	public void finishAllActivity() {
		for (int i = 0; i < activityStack.size(); i++) {
			if (null != activityStack.get(i)) {
				activityStack.get(i).finish();
			}
		}
		activityStack.clear();
	}

	/**
	 * 退出app
	 */
	public void AppExit(Context context) {
		try {
			finishAllActivity();
			ActivityManager activityMgr = (ActivityManager) context
					.getSystemService(Context.ACTIVITY_SERVICE);
			activityMgr.killBackgroundProcesses(context.getPackageName());
			System.exit(0);
		} catch (Exception e) {
		}
	}
}
